Quarterly US dollars
1986-09-30 468816
1986-12-31 481968
1987-03-31 509052
1987-06-30 527714
1987-09-30 538747
1987-12-31 580693
1988-03-31 580177
1988-06-30 566499
1988-09-30 584788
1988-12-31 597867
1989-03-31 601990
1989-06-30 577776
1989-09-30 615785
1989-12-31 640523
1990-03-31 645656
1990-06-30 648184
1990-09-30 694410
1990-12-31 739777
1991-03-31 695939
1991-06-30 650907
1991-09-30 670992
1991-12-31 685294
1992-03-31 640577
1992-06-30 660009
1992-09-30 717395
1992-12-31 705390
1993-03-31 706073
1993-06-30 693492
1993-09-30 706758
1993-12-31 729452
1994-03-31 733454
1994-06-30 750754
1994-09-30 785760
1994-12-31 835140
1995-03-31 930359
1995-06-30 925171
1995-09-30 919093
1995-12-31 947717
1996-03-31 926348
1996-06-30 925326
1996-09-30 946225
1996-12-31 1001328
1997-03-31 986619
1997-06-30 1005774
1997-09-30 1035169
1997-12-31 1164089
1998-03-31 1133207
1998-06-30 1183883
1998-09-30 1297923
1998-12-31 1314228
1999-03-31 1213449
1999-06-30 1172670
1999-09-30 1250026
1999-12-31 1229869
2000-03-31 1323645
2000-06-30 1351241
2000-09-30 1353629
2000-12-31 1482535
2001-03-31 1545313
2001-06-30 1469277
2001-09-30 1535163
2001-12-31 1571506
2002-03-31 1527257
2002-06-30 1632446
2002-09-30 1638102
2002-12-31 1776865
2003-03-31 1856048
2003-06-30 2011213
2003-09-30 1933255
2003-12-31 2068602
2004-03-31 2288508
2004-06-30 2284313
2004-09-30 2331497
2004-12-31 2486040
2005-03-31 2544164
2005-06-30 2562705
2005-09-30 2584599
2005-12-31 2530409
2006-03-31 2811129
2006-06-30 2930783
2006-09-30 2992257
2006-12-31 3155352
2007-03-31 3600889
2007-06-30 3690689
2007-09-30 4003963
2007-12-31 4244388
2008-03-31 4713898
2008-06-30 4056726
2008-09-30 3893504
2008-12-31 3638314
2009-03-31 3506267
2009-06-30 3544008
2009-09-30 3466154
2009-12-31 3388349
2010-03-31 3259936
2010-06-30 3042103
2010-09-30 3236648
2010-12-31 3107361
2011-03-31 3103359
2011-06-30 3055729
2011-09-30 3356262
2011-12-31 3266178
2012-03-31 3274813
2012-06-30 2980542
2012-09-30 3059421
2012-12-31 3030092
2013-03-31 2817432
2013-06-30 2662793
2013-09-30 2582728
2013-12-31 2592145
2014-03-31 2559695
2014-06-30 2611631
2014-09-30 2506043
2014-12-31 2419514
2015-03-31 2332671
2015-06-30 2246227
2015-09-30 2174077
2015-12-31 2159777